Enhancing ToF-SIMS OLED Data Analysis with Neural Networks and Mathematical Spectral Mixing

J Am Soc Mass Spectrom. 2024 Jul 3;35(7):1390-1393. doi: 10.1021/jasms.4c00158. Epub 2024 May 31.

Abstract

This study presents a method employing artificial neural networks (ANN) for automated interpretation and depth profiling of organic multilayers using a limited set of time-of-flight secondary ion mass spectrometry (ToF-SIMS) spectra. To overcome the challenges of acquiring massive data sets for OLEDs, training data was generated by combining existing ToF-SIMS data sets with mathematically generated spectra. The classification model achieved an impressive 99.9% accuracy in identifying the mixed layers of the OLED dyes. The study demonstrates the synergy of ToF-SIMS and ANN analysis for effective classification and depth profiling of the OLED layers, providing valuable insights for the development and optimization of organic electronic devices.